Greek Three ::Unfinished:: Picture

I had this weird Greek Mythology phase (which may or may not have been triggered by my Hades/Persephone drawing [link]). I guess this is around the time them three brothers have just ousted their Titan dad. I wonder why most modern retelling seems to forget Hades' helm? I mean Zeus had his lightning, Poseidon his trident, but Hades...? People only remember his dog.